The only place where I think we could make the semicolons optional is at the end of a let-binding or a record (like json does iirc), which would indeed be a small but blessed change.
For the array litterals, I don't really see which improvements your syntax brings (except suppressing the space-separated list, which conflicts with the syntax for function application). Is it used somewhere else ?
For the array litterals, I don't really see which improvements your syntax brings (except suppressing the space-separated list, which conflicts with the syntax for function application). Is it used somewhere else ?